| A | B |
|---|
| inlet | any area of water extending into the land from a larger body of water |
| gulf | a large inlet |
| sound | a long inlet that separates offshore islands from the mainland |
| tributary | a stream or river that flows into a larger stream of river |
| river system | a river and its tributaries |
| drainage basin | the land drained by a river system |
| irrigation | the use of canals, ditches, or pipes to move water |
| elevation | the height of land in relation to sea level |
| natural vegetation | the plant life that grows naturally in a place |
| arid | dry |
| tundra | a cold, dry region where trees cannot grow |
| land use | how the land is used |
| natural resource | something found in nature that people can use to meet their needs |
| renewable resource | resources that can be made again by people or nature |
| nonrenewable resource | resources that cannot be made again by people or nature |
| modify | to change |
